Kyle Richards nearly quit The Real Housewives Of Beverly Hills over allegations that her husband Mauricio Umansky cheated on her and now faces new claims he was involved in a kinky threesome.

The 44-year-old reality TV star was talked out of leaving last month by the show's producers, but new revelations of an alleged threesome involving her husband, a female escort and a transsexual prostitute have surfaced.

Kyle and 42-year-old Mauricio have been married for 17 years and have three daughters together, Alexia, Sophia and Portia.

Cheating allegations: Mauricio Umansky, shown in March with wife Kyle Richards in Las Vegas, has been dogged with another allegation of philandering

Mauricio has been the subject of philandering rumours and Star magazine this week added fuel with its report of a wild sex threesome.

The magazine interviewed a transgender former prostitute who claimed that her female escort partner brought Mauricio back to their home after picking him up at The Hollywood Roosevelt Hotel.